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A solution is saturated with respect to ...

A solution is saturated with respect to `SrCO_(3)` and `SrF_(2)`. The `[CO_(3)^(2-)]` was found to be `1.2 xx 10^(-3)M`. The concnetration of `F^(Theta)` in the solution would be
Given `K_(sp)` of `SrCO_(3) = 7.0 xx10^(-10)M^(2)`,
`K_(sp) "of" SrF_(2) = 7.9 xx 10^(-10) M^(3)`,

A

`1.3x 10^(-3) M`

B

`3.7x 10^(-2) M`

C

`5.8x10^(-7)M`

D

`2.6x10^(-2)M`

Text Solution

Verified by Experts

The correct Answer is:
B
`[S^(2+)]=(K_(sp)(SCO_(3)))/([CO_(3)^(2)])=(70.x10^(-10)M^(2))/(1.2x10^(-3)M)=5.8x10^(-2)M`
`[F^(-)]=[(K_(sp)(SrF_(2)))/([Sr^(2+)]))]^(1//2)=((7.9x10^(-10)M^(3))/(5.8x10^(-7)M))`
`3.7x10^(-2)M`
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